Every user using the "command" function on Gossamer file , could use #cat /etc/passwd and then could browse each user executing #ls /home/user/public_html and so on.., cacthing code and clean passwords between user accounts ....

There are similar programs (command line emulator via browser) also in php (for example phpmyshell) ...however ,since this kind of programs could create security problems , with php there is the famous "php safe mode" that restrict the usage of "unix command" on a shared enviroments to the user directory .So , running the php safe mode , #cat /etc/passwd or any other linux command out of /home/user will never work .

Well , now my question is ..

Is there anything similar to php_safe_mode on perl ? How could I be safe from program like Gossamer File manager on a shared enviroment ?